About us

that other quartet was born from a creative desire to expand the boundaries of the classical string quartet without losing the core of this intimate and powerful genre. Classically trained to the highest level and committed to a creative and open minded approach, they produce performances where communication and audience experience is the priority.

They know the rules, but they also love to break them.

Violin: Gaianeh Pilossian (SE) and Zaida Ponthin (FI) Viola: Karin Wallmyr Creutzer (SE) Cello: Ruth Spargo (UK/SE)

that other quartet love exploring the traditional classical string quartet repertoire but they specialise in arranging their own covers of contemporary pop music, jazz standards and folk music from around the world and creating their own unique programmes. They are at home in both the studio and on stage and have  collaborated with a number of musicians and artists including Tjuvjakt, Cherrie, Emelie Nicolas, JADA and Jonathan Johansson. They have performed their program LOVE NOTES regularly in Sweden since 2017, both publicly and as part of Region Stockholms "Culture in health settings" program. The program is currently bookable through Västmanlandsmusiken.

that other quartet also enjoy performing at weddings, conferences and events and do so regularly in the Stockholm/Sörmland area.  They are experienced at curating music play lists for all kinds of occasions.  

An international ensemble, members of that other quartet have performed throughout Scandinavia, Europe and the rest of the world. Members also play in other chamber ensembles such as the On y va Ensemble and Stockholm Jazz Strings and have performed with orchestras including the Royal Philharmonic Orchestra (UK), the Swedish Radio Orchestra, Stockholm Concert Orchestra, Norrköping Symphony Orchestra, Nordiska Kammarorkesten, Gävle Symfoniorkester, Norrlands Opera, Dala Sinfonietta, Folk Operan, Opera på Skäret, Västerås Sinfonietta och Läckö Opera orchestra.  Gaianeh, Zaida and Ruth are also members of the Berlin- based c/o chamber orchestra.  The members also have a diverse range of other experiences ranging from theatre, studio recording and arranging to collaborations with dancers, filmographers, and computer engineers as well as teaching, workshops and interactive therapeutic music work in hospitals.

that other quartet  can be booked for the following occasions:

  • Events, parties, conferences; weddings and christenings: curated music from all genres either as a performance, or simply in the background, setting the mood. We love to play pop and make our own arrangements
  • Concerts: various lengths and formats. See projects
  • Studio recording sessions

  • TV recording sessions 

  • Collaborations with other artists and performers, across all genres! In the past we have worked with not only musicians of different kinds but DJs, circus performers and actors.

  • Interactive performances in schools, hospitals and care homes

For more information about us, please get in touch through our contact page.

 the members...  


Gaianeh is a classical violinist who moves freely through genres in the music and performance world. She has a  Masters in Orchestra Studies from the University of Gothenburg and Bachelor in chamber music from the Musikhögskolan in Örebro. 

Gaianeh has been freelancing since 2012 and is an active chamber and orchestral musician, as well as regularly playing in jazz and pop constellations. She is a member of number of ensembles including string quartet ’that other quartet', jazz quartet ’Stockholm Jazz Strings’ and piano trio ’On y va Ensemble’. She has also played with Folkoperan, Norrlandsoperan, Scenkonst Sörmland, Örebro Länsteater, Stockholm Concert Orchestra and Gstaad Festival Orchestra.


Zaida is a classically trained violinist from Mariehamn, Åland. She is an active freelance chamber and orchestra musician in both Sweden and Finland. She has studied at the Fontys Academy of Music i Tilburg, the Royal College of Music in Stockholm and the University of Gothenburg.

She is member in both the string quartet 'that other quartet' and orchestra 'c/o chamber orchestra'.


Karin is active as violist and has been freelancing since 2008 when she graduated from the Royal College of Music in Stockholm. She often works in various symphony and chamber orchestras around Sweden, such as Swedish Radio Symphony Orchestra, the Royal Swedish Orchestra, Folkoperan in Stockholm, Uppsala Chamber Orchestra and others. This combined with chamber music projects and concerts with that other quartet.


Ruth is a Swedish British cellist and Music for Health practitioner living and working in Stockholm/Sörmlands. Ruth plays with several of the UK and Swedish orchestras and is contracted for many independent projects in Stockholm in both the classical and pop worlds. As an orchestral musician Ruth has played with both the RPO and RPCO in London and is a regular guest with several of the Swedish orchestras including Nordiska Kammarorkester, Norrköpings Symfoniorkester, Folkoperan, Opera på Skäret, Stockholm Concert Orchestra, Västerås Sinfonietta and Läckö Opera Orchestra. Ruth has trained and works with a specialised practice of music-making in health settings such as special schools, care homes and hospitals. Find out more here at Ruth's own homepage!